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Black is driving me nuts!

Discussion in 'Roland' started by john1, Nov 13, 2012.

  1. john1

    john1 Guest

    Well, All other colors seem to print alright with exception of dark reds but black keeps getting these lines.

    I wouldn't say it was banding but it may be a slight case beings there is lines in it. It's more of a grain look to me.

    I am printing on gloss oracal 3165ra using the oracal profile for that straight out of the box, all the "come with" VW profiles, tried changing head speed, heat, bi and uni direction, max impact, us prepress, sign&display and still cannot get a nice non grainy black. The numbers in the photos are 80/80/80/100, 0/0/0/100 and 100/100/100/100.

    I was suggested using the 3751 profile as it lays down more ink but the same results.

    Using versaworks on a sp-300i with OEM inks. The machine was just cleaned today.

    Any tips?
     

    Attached Files:

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  2. ironchef

    ironchef Very Active Member

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    A 540x1080 or 720x1080 profile maybe
     
  3. john1

    john1 Guest

    720, it's the only resolution the oracal profiles come standard in
     
  4. GAC05

    GAC05 Major Contributor

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    Run a nozzle check to see how the black is firing.
    Hard to tell from your pic if the CMYK changes are doing anything.
    I get nice rich black with no drama using RGB 0,0,0 black that works out to
    C75,M68,Y67,K90 on gloss materials.

    wayne k
    guam usa
     
  5. SIGNTIME

    SIGNTIME Active Member

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    also try bk21a thats what we use and it looks like black cut vinyl
     
  6. CanuckSigns

    CanuckSigns Very Active Member

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    I had the exact issue last week on my roland, ended up changing the black to 30/30/30/100 and ran on the sign&display preset. Also you may want to go to general formulations website, i've found their Automark profile to be awesome for 99% of my vinyl printing
    http://generalformulations.com/230.asp
     
  7. ironchef

    ironchef Very Active Member

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    Oh lol my mimaki is the same, 540 and lower gives bad results, also using cmyk black gives me problems
     
  8. CanuckSigns

    CanuckSigns Very Active Member

    2,855
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    On a serious note...
     

    Attached Files:

  9. ucmj22

    ucmj22 Very Active Member

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    looks like too much ink. id say its a profile problem.
     
  10. Mike Paul

    Mike Paul Major Contributor

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    Try the 3651 profile and see if it's any better. I never liked the 3165ra profile.

    Could also be bad material...
     
  11. john1

    john1 Guest

    Thanks guys, I just got in from running around all day. I'll try some things and get back to ya's.
     
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